Improvement in bed-plates for paper-mill rag-engines



. V A. HANKEY. v Bed- Plate for Pap'er-M ill Rag-Engines.

No. 221,812. Pa't ented Nov. 18,1879.

N-FETERS, FHOTO-UTHDGRAPHEFI wAsii NGTON n C UNITED STATES PATENTOEEIoE.

ANTHONY HANKEY, or LEroES'TEE, MASSAcEUSETTs.

IMPROVEMENT IN BED-PLATES FOR PAPER-MILL RAG-ENGINES Specificationforming part of Letters Patent No. 221,812, dated November 18, 1879;application filed October 2, 1879.

To all whom it may concern:

Be it known that I, ANTHONY HANKEY,of

Leicester, in the county of Worcester and Commonwealth ofl\lassachusetts, have invented certain new and useful Improvementsmetallic side pieces; B B, the cutters or blades;

U, the wood and filling between the blades; D, the cross-bolts whichpass througlrfrom side to side and hold the parts securely together.

My improved bed-plate is made in the usual manner, excepting in the formand arrangement of the cutting-blades B. These blades or knives are madein serpentine form, or with a series of right-and-left bends, andwithout any acute angles, and are, furthermore, so constructed andarranged that the curves in each blade are different and in a differentdirection from the bends or curves in the blade on each side thereof.Consequently the stock is not crowded along to a particular point, butis changed and forced laterally by the action of the cutting-wheel uponthe cutting-blades as it passes or forces its knives with a shearingaction over the difierent blades B.

With my improved form of blades. arranged and combined together asdescribed, the Stock is sheared so as to leave the fiber of thepaper-stock longer and more perfect for the manufacture of strong anddurable paper, while at the same time a greater uniformity of reductionand form of fiber are obtained, thereby enhancing the character andvalue of the paper.

I am aware that Letters Patent were granted to William Glarke,0ctober 9,1849, No. 6,784, and to Taylor and Brightman, November 14, 1871, No.120,837; and I do not wish to be understood as claiming anythingshowuand described in said Letters Patent, or either of them; nor do Iclaim herein anything shown and described in the Letters Patent grantedto me March 22, 1870, No. 101,008; and I hereby disclaim the inventiondescribed and shown in said Letters Patent, and each of them; but

VVhatI claim as my invention, and desire to secure by Letters Patent, asan improved article of manufacture, is V A bed-plate for paper-millrag-engines, the blades of which are made separately and in serpentineform, without any acute angles, and arranged in reverse positions inrelation" to each other, and so as to bring each alternate curve out ofline with the curve of the next succeeding blade, as shown anddescribed,

Witnesses:

EDWIN E. MOORE, J OHN G. DEWEY.

